Broadcast Signal Playback Switching Using Signal Strength Maps
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The switching between over-the-air broadcast and network broadcast in vehicles often results in lagging or missing content due to asynchronous transmission, leading to a poor user experience, especially in environments where broadcast signal quality fluctuates.
Innovation Solution
A method and apparatus for generating a broadcast signal strength layer on a map based on terminal positioning and signal strength data, allowing for seamless switching between different broadcast signals to maintain consistent listening quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If switching between over-the-air broadcast and network broadcast is implemented, then broadcast listening coverage is improved, but transmission synchronization deteriorates causing lagging or missing content
Solution Approach 1:
The system performs preliminary actions by predicting future broadcast signal strength based on historical data and current trends before the signal actually deteriorates. This allows the terminal to proactively switch to network broadcast in advance, ensuring continuous playback without lag or content loss, thus resolving the synchronization issue while maintaining coverage adaptability
Solution Approach 2:
The system creates a buffer by pre-loading broadcast content and maintaining both over-the-air and network broadcast streams simultaneously before a switch is needed. This cushioning effect ensures that if one broadcast source fails or lags, the other is already ready to take over seamlessly, preventing content loss and maintaining synchronization
2Loss of energy
If over-the-air broadcast is used, then transmission cost is reduced, but signal quality deteriorates in shielded environments
Solution Approach 1:
The system introduces network broadcast as an intermediary solution when over-the-air broadcast signal quality deteriorates in shielded environments. The terminal automatically detects signal degradation and switches to network broadcast, which provides stable audio quality regardless of physical shielding, thus maintaining reliability without permanently increasing transmission cost
Solution Approach 2:
The system dynamically changes the broadcast source parameter based on signal strength conditions. When over-the-air signal quality falls below a threshold in shielded environments, the system transitions to network broadcast, and when signal quality improves, it switches back to over-the-air broadcast, optimizing both cost and reliability through parameter adaptation
3Reliability
If network broadcast is used, then signal quality is improved, but transmission cost increases and synchronization issues occur
Solution Approach 1:
The system predicts when over-the-air broadcast signal will deteriorate and switches to network broadcast in advance, rather than waiting for actual signal failure. This preliminary action ensures network broadcast is only activated when necessary, improving signal quality proactively while minimizing unnecessary network transmission costs
Solution Approach 2:
The terminal autonomously monitors broadcast signal strength and automatically switches between over-the-air and network broadcast based on predicted signal quality. This self-service capability eliminates the need for manual intervention and ensures network broadcast is used only when genuinely needed for quality improvement, optimizing cost efficiency
Data Source
AI summary
The application discloses example methods and apparatuses for map generation and for playing broadcast signals. One example map generation method includes receiving multiple pieces of first information, where each piece of the multiple pieces of first information includes a corresponding positioning location of a corresponding terminal, strength of a broadcast signal modulated at a first modulation frequency and received by the corresponding terminal at the corresponding positioning location, and the first modulation frequency. A broadcast signal strength layer is generated according to the multiple pieces of first information, where the broadcast signal strength layer represents a first coverage range corresponding to a first strength range of a broadcast signal modulated at the first modulation frequency.